Annotation of src/usr.bin/tmux/cfg.c, Revision 1.43
1.43 ! nicm 1: /* $OpenBSD: cfg.c,v 1.42 2015/09/09 12:09:21 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.21 nicm 21: #include <ctype.h>
1.1 nicm 22: #include <errno.h>
23: #include <stdio.h>
1.15 nicm 24: #include <stdlib.h>
1.1 nicm 25: #include <string.h>
1.40 nicm 26: #include <unistd.h>
1.32 tobias 27: #include <util.h>
1.1 nicm 28:
29: #include "tmux.h"
30:
1.41 nicm 31: char *cfg_file;
1.40 nicm 32: struct cmd_q *cfg_cmd_q;
33: int cfg_finished;
34: int cfg_references;
35: char **cfg_causes;
36: u_int cfg_ncauses;
37: struct client *cfg_client;
38:
39: void cfg_default_done(struct cmd_q *);
40:
41: void
1.41 nicm 42: set_cfg_file(const char *path)
43: {
44: free(cfg_file);
45: cfg_file = xstrdup(path);
46: }
47:
48: void
1.40 nicm 49: start_cfg(void)
50: {
1.41 nicm 51: char *cause = NULL;
52: const char *home;
1.40 nicm 53:
54: cfg_cmd_q = cmdq_new(NULL);
55: cfg_cmd_q->emptyfn = cfg_default_done;
56:
57: cfg_finished = 0;
58: cfg_references = 1;
59:
60: cfg_client = TAILQ_FIRST(&clients);
61: if (cfg_client != NULL)
62: cfg_client->references++;
63:
64: if (access(TMUX_CONF, R_OK) == 0) {
65: if (load_cfg(TMUX_CONF, cfg_cmd_q, &cause) == -1)
66: cfg_add_cause("%s: %s", TMUX_CONF, cause);
67: } else if (errno != ENOENT)
68: cfg_add_cause("%s: %s", TMUX_CONF, strerror(errno));
69:
1.41 nicm 70: if (cfg_file == NULL && (home = find_home()) != NULL) {
71: xasprintf(&cfg_file, "%s/.tmux.conf", home);
72: if (access(cfg_file, R_OK) != 0 && errno == ENOENT) {
73: free(cfg_file);
74: cfg_file = NULL;
75: }
76: }
1.40 nicm 77: if (cfg_file != NULL && load_cfg(cfg_file, cfg_cmd_q, &cause) == -1)
78: cfg_add_cause("%s: %s", cfg_file, cause);
79: free(cause);
80:
81: cmdq_continue(cfg_cmd_q);
82: }
1.1 nicm 83:
1.28 nicm 84: int
85: load_cfg(const char *path, struct cmd_q *cmdq, char **cause)
1.1 nicm 86: {
1.7 deraadt 87: FILE *f;
1.32 tobias 88: char delim[3] = { '\\', '\\', '\0' };
89: u_int found;
90: size_t line = 0;
1.33 nicm 91: char *buf, *cause1, *p;
1.1 nicm 92: struct cmd_list *cmdlist;
93:
1.29 nicm 94: log_debug("loading %s", path);
1.1 nicm 95: if ((f = fopen(path, "rb")) == NULL) {
1.28 nicm 96: xasprintf(cause, "%s: %s", path, strerror(errno));
97: return (-1);
1.25 nicm 98: }
99:
1.32 tobias 100: found = 0;
1.42 nicm 101: while ((buf = fparseln(f, NULL, &line, delim, 0)) != NULL) {
1.32 tobias 102: log_debug("%s: %s", path, buf);
1.13 nicm 103:
1.21 nicm 104: /* Skip empty lines. */
1.32 tobias 105: p = buf;
106: while (isspace((u_char) *p))
107: p++;
108: if (*p == '\0') {
109: free(buf);
1.21 nicm 110: continue;
1.22 nicm 111: }
1.21 nicm 112:
1.28 nicm 113: /* Parse and run the command. */
1.32 tobias 114: if (cmd_string_parse(p, &cmdlist, path, line, &cause1) != 0) {
115: free(buf);
1.28 nicm 116: if (cause1 == NULL)
1.1 nicm 117: continue;
1.33 nicm 118: cfg_add_cause("%s:%zu: %s", path, line, cause1);
1.28 nicm 119: free(cause1);
1.9 nicm 120: continue;
1.20 nicm 121: }
1.32 tobias 122: free(buf);
1.28 nicm 123:
1.1 nicm 124: if (cmdlist == NULL)
125: continue;
1.34 nicm 126: cmdq_append(cmdq, cmdlist, NULL);
1.1 nicm 127: cmd_list_free(cmdlist);
1.28 nicm 128: found++;
1.1 nicm 129: }
130: fclose(f);
1.25 nicm 131:
1.28 nicm 132: return (found);
133: }
134:
135: void
1.43 ! nicm 136: cfg_default_done(__unused struct cmd_q *cmdq)
1.28 nicm 137: {
138: if (--cfg_references != 0)
139: return;
140: cfg_finished = 1;
1.18 nicm 141:
1.28 nicm 142: if (!RB_EMPTY(&sessions))
143: cfg_show_causes(RB_MIN(sessions, &sessions));
1.1 nicm 144:
1.28 nicm 145: cmdq_free(cfg_cmd_q);
146: cfg_cmd_q = NULL;
1.30 nicm 147:
148: if (cfg_client != NULL) {
149: /*
150: * The client command queue starts with client_exit set to 1 so
151: * only continue if not empty (that is, we have been delayed
152: * during configuration parsing for long enough that the
153: * MSG_COMMAND has arrived), else the client will exit before
154: * the MSG_COMMAND which might tell it not to.
155: */
156: if (!TAILQ_EMPTY(&cfg_client->cmdq->queue))
157: cmdq_continue(cfg_client->cmdq);
1.39 nicm 158: server_client_unref(cfg_client);
1.30 nicm 159: cfg_client = NULL;
160: }
1.33 nicm 161: }
162:
163: void
1.36 nicm 164: cfg_add_cause(const char *fmt, ...)
1.33 nicm 165: {
1.36 nicm 166: va_list ap;
167: char *msg;
1.33 nicm 168:
169: va_start(ap, fmt);
170: xvasprintf(&msg, fmt, ap);
1.38 nicm 171: va_end(ap);
1.33 nicm 172:
1.35 nicm 173: cfg_ncauses++;
174: cfg_causes = xreallocarray(cfg_causes, cfg_ncauses, sizeof *cfg_causes);
175: cfg_causes[cfg_ncauses - 1] = msg;
1.33 nicm 176: }
177:
178: void
179: cfg_print_causes(struct cmd_q *cmdq)
180: {
181: u_int i;
182:
1.35 nicm 183: for (i = 0; i < cfg_ncauses; i++) {
184: cmdq_print(cmdq, "%s", cfg_causes[i]);
185: free(cfg_causes[i]);
1.33 nicm 186: }
1.35 nicm 187:
188: free(cfg_causes);
189: cfg_causes = NULL;
1.37 nicm 190: cfg_ncauses = 0;
1.17 nicm 191: }
192:
193: void
1.28 nicm 194: cfg_show_causes(struct session *s)
1.17 nicm 195: {
196: struct window_pane *wp;
197: u_int i;
198:
1.35 nicm 199: if (s == NULL || cfg_ncauses == 0)
1.17 nicm 200: return;
201: wp = s->curw->window->active;
202:
203: window_pane_set_mode(wp, &window_copy_mode);
204: window_copy_init_for_output(wp);
1.35 nicm 205: for (i = 0; i < cfg_ncauses; i++) {
206: window_copy_add(wp, "%s", cfg_causes[i]);
207: free(cfg_causes[i]);
1.17 nicm 208: }
1.35 nicm 209:
210: free(cfg_causes);
211: cfg_causes = NULL;
1.37 nicm 212: cfg_ncauses = 0;
1.1 nicm 213: }
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